Wearable device charger



FIG. 1 is a top perspective view of a wearable device charger in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the Figures show portions of the wearable device charger and environment which form no part of the claimed design. 

CLAIM The ornamental design for wearable device charger, as shown and described. 